Receiver
| RECEIVER | METRIC | INCH/commonwealth | Israeli |
| Barrel | 1"x16 | 1"x16 | |
| Gas tube nut | 9/16"x24 | 9/16"x24 | 9/16"x24 |
| Take down pin assy | 1/4"x32 | 1/4"x28 | |
| BHO/Mag release screw pin | #10x32 | #10x32 | #10x32 |
| LOWER RCVR | METRIC | INCH/commonwealth | Israeli |
| Pistol grip nut | 1/4"x28 | 1/4"x28 | 1/4"x28 |
| Recoil tube exterior | 17/32" x 36 | 17/32" x 36 | 17/32" x 36 |
| Recoil tube interior | 15/32" x 36 | 15/32" x 36 | 15/32" x 36 |
| Recoil tube/spring retainer nut | 9/16"x24 | ||
| Rear sight base windage screws | #8x40 | #8x40 | #8x40 |
| Takedown lever retainer pin/screw | #10x32 | #10x32 | #10x32 |
| Buttpad/plate screw | 1/4"x28 | 1/4"x28 | 1/4"x28 |
| Rear sling swivel screws | |||
| Stock tang screw |
| BARREL ASSEMBLY | METRIC | INCH/commonwealth | Israeli | Israeli HB |
| Barrel | 1x16 | 1x16 | ||
| Gas tube/sight block | 17/32"X36 | 17/32"X36 | 17/32"X36 | 17/32"X36 |
| Gas tube adjustment nut | ||||
| Front sight | #12x28 | #10x40 | #12x28 | #12x28 |
| Flash hider/muzzle | 9/16"x24 LH | 9/16"x24 RH | 11/16" x 24 | |
| Front Sling swivel band | #8x40 | #8x40 | #8x40 | #8x40 |
| Handguard retainer screw | #10x32 | #10x32 | #10x32 | #10x32 |
| Israeli muzzle / bipod to muzzle coupler | n/a | n/a | n/a | 11/16"x24 |
| L1A1 front sight set screw | n/a | #8x36 | n/a | n/a |
| Bipod assy screws (Metric) | 5/16"-24 | n/a | n/a | n/a |
| RECEIVER | METRIC | INCH/commonwealth | Israeli |
| Barrel | 1x16 | 1x16 | |
| Recoil tube | |||
| Gas tube nut | |||
| BHO/Mag release screw pin | |||
| RECEIVER | METRIC | INCH/commonwealth | Israeli |
| Barrel | 1x16 | 1x16 | |
| Recoil tube | |||
| Gas tube nut | |||
| BHO/Mag release screw pin | |||